I was surprised JKR omitted a final word
about Harry assuming guardianship of
Tonk’s and Remus’ newborn son. It was
obviously her intention to have Harry
do a repeat of the Godfather role played
by Sirius. Other people left in Limbo:
the Half-Blood Prince Snape.
Professor McGonigal,
Hagrid,
the Malfoy Family, Draco - maybe beause
of Dumbledore’s explicit request for his life,
but Lucius and his wife are accepted into
‘polite society’?
And WHO rebuilt the destroyed Hogwartz?

Some of the lengthy chapters wherein Harry
and Hermione fend their way across the
countryside minus Ron could have been
abbreviated. Too many pages spent
on Harry’s Dumbledore disillusionment.

Actually, based on some recent personal experiences, that part rang true for me. The disillusionment is rarely instantaneous and finally, at some point, one is forced to make a choice.

Dumbledore was still "mostly right" in terms of dealing with Voldemort -- his weaknesses were more personal than mission-related, so Harry's choice is still fairly straightforward.

It's a bit less easy when the object of your disillusionment appears to be "wrong" about the important stuff. Or wrong about some of the important stuff, but not all of it, and it's not easy to tell the difference.

The plot might have been more interesting if Rowling had found some way to sharpen the importance of deciding between Hallows and Horcruxes -- perhaps something along the lines of the Hallows being capable of directly dealing with the horcruxes, but Harry is forced to choose only one or the other because there's not enough time to do both. It would have been interesting also to have Voldemort be aware of the Hallows, so that they both have to decide.